CVE-2020-13602 Remote Denial of Service in LwM2M do_write_op_tlv
Remote attackers can cause a denial of service in Zephyr RTOS via improper input validation in the LwM2M do_write_op_tlv function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-13602?
CVE-2020-13602 is a medium-severity denial of service vulnerability in Zephyrproject Zephyr, published on 24 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Remote Denial of Service in LwM2M do_write_op_tlv. Zephyr versions >= 1.14.2, >= 2.2.0 contain Improper Input Validation (CWE-20), Loop with Unreachable Exit Condition ('Infinite Loop') (CWE-835). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-g9mg-fj58-6fqh
Which versions are affected by CVE-2020-13602?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2020-13602?
No fix has been published for CVE-2020-13602 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-13602 being exploited?
There is no known exploitation of CVE-2020-13602 in the wild and no public exploit code.
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